Size-dependent selectivity and quantification on detecting PS nanoplastics particles in a mixed solution with different diameters by using periodic Ag nanocavities SERS substrates with high sensitivity

IF 12.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials Pub Date : 2024-12-19 DOI:10.1016/j.jhazmat.2024.136943

Yansheng Liu, Zhenle Qin, Guofu Wang, Xiaobo Jia, Jin Zhou, Hongqi Li, Zhaoxu Li, Xiaohui Fang

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引用次数: 0

Abstract

Nanoplastic particles (NPPs) have attracted lots of attention due to their toxicity. In this study, a Surface-enhanced Raman scattering (SERS)-based category on selectivity and quantification detecting the polystyrene (PS) NPPs has been presented. Firstly, the size-dependent SERS relationship between the diameter of Ag nanocavities (AgNCAs) and the diameter of the PS NPPs is studied. By continuously dripping the PS NPPs on proposed AgNCAs substrates, AgNCAs exhibit excellent enrichment capability with a promoted limit of detection (LOD) of 0.001 mg/mL. Secondly, thermally evaporated Ag nanoparticles (AgNPs) as an enhancement layer are used to form the AgNPs/PS NPPs/AgNCAs sandwich structure with a SERS enhancement of 300%. Thirdly, a SERS microfluidic chip constructed by integrating two kinds of pore size (87 nm and 356 nm) AgNCAs is fabricated to selectivity quantifying absolute concentration of the mixed PS NPPs with different diameters in a mixed solution. It shows excellent performance. This novel category proves a good method for identifying plastic nanoparticles and analyzing their size distribution existing in the surroundings indicating good practical applications.

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纳米塑料颗粒（NPPs）因其毒性而备受关注。本研究提出了一种基于表面增强拉曼散射（SERS）的聚苯乙烯（PS）NPPs选择性和定量检测方法。首先，研究了银纳米空腔（AgNCAs）的直径与聚苯乙烯（PS）NPPs 的直径之间的尺寸依赖性 SERS 关系。通过在拟议的 AgNCAs 基质上连续滴入 PS NPPs，AgNCAs 表现出卓越的富集能力，检测限（LOD）提高到 0.001 mg/mL。其次，使用热蒸发的银纳米粒子（AgNPs）作为增强层，形成 AgNPs/PS NPPs/AgNCAs 夹层结构，SERS 增强率达 300%。第三，通过整合两种孔径（87 nm 和 356 nm）的 AgNCAs，制作了一种 SERS 微流控芯片，用于选择性地量化混合溶液中不同直径的混合 PS NPPs 的绝对浓度。它显示出卓越的性能。这种新型方法证明是识别塑料纳米粒子和分析其在周围环境中的尺寸分布的好方法，具有良好的实际应用价值。

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来源期刊

Journal of Hazardous Materials 工程技术-工程：环境

CiteScore

25.40

自引率

5.90%

发文量

3059

审稿时长

58 days

期刊介绍： The Journal of Hazardous Materials serves as a global platform for promoting cutting-edge research in the field of Environmental Science and Engineering. Our publication features a wide range of articles, including full-length research papers, review articles, and perspectives, with the aim of enhancing our understanding of the dangers and risks associated with various materials concerning public health and the environment. It is important to note that the term "environmental contaminants" refers specifically to substances that pose hazardous effects through contamination, while excluding those that do not have such impacts on the environment or human health. Moreover, we emphasize the distinction between wastes and hazardous materials in order to provide further clarity on the scope of the journal. We have a keen interest in exploring specific compounds and microbial agents that have adverse effects on the environment.